The 3 columns in color are computed by VizieR, and are not part of the original data.

Note: USNO-A2.0 contains 526,280,881 sources, and is based on a re-reduction of the Precision Measuring Machine (PMM) scans from POSS-I O and E plates (>=-18°) and SRC-J and ESO-R plates (<=-20°). USNO-A2.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory.
The major difference between USNO-A2.0 and its previous version USNO-A1.0 is that A1.0 used the Guide Star Catalog as its reference frame whereas A2.0 uses the ICRF as realized by the USNO ACT catalog (Urban et al. 1997). The VizieR search engine uses an on-line compressed version (3.6Gbytes) which was generated at CDS.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	25.849	12 14 10.20216	-00 50 21.9120	0825-07682722	183.542509	-00.839420			17.6	15.8	1955.298
2	28.281	12 14 12.28488	-00 51 03.3516	0825-07682879	183.551187	-00.850931			19.3	18.7	1955.298

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	APM-ID	RAJ2000 deg	DEJ2000 deg	rmag mag	l_	rClass	rStel	rDiam arcsec	rEll	bmag mag	l_	bClass	bStel	bDiam arcsec	b-r mag	Mflag [****ClosingBrace(s)Inserted****]
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Mflag

%22> 125.67612 14 10.20288-00 50 22.0920EO1401-0174714183.542512-00.83947015.89  -1 0.77 10.6 0.0417.94  -1 -1.56 8.3 2.05   226.95212 14 09.01536-00 50 51.0828EO1401-0175507183.537564-00.84752319.91   1 3.99 3.6 0.2822.27L 0     2.36   328.97712 14 12.33336-00 51 03.5424EO1401-0175865183.551389-00.85098418.91   2 1.87 6.4 0.3120.41   1 3.19 8.0 1.50   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	26.112	12 14 10.15392	-00 50 21.9012	S20000233303	183.542308	-00.839417	1997.349	15.91	0.44	17.47	0.42	0	3.39	0.04

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-B1.0	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 mas	e_DEJ2000 mas	Epoch yr	pmRA mas/yr	pmDE mas/yr	Ndet	B1mag mag	R1mag mag	B2mag mag	R2mag mag	Imag mag
1	26.267	12 14 10.16136	-00 50 21.6924	0891-0215866	183.542339	-00.839359	100	107	1978.2	-6	10	5	17.68	15.72	17.82	16.06	15.64
2	28.331	12 14 12.30144	-00 51 03.1032	0891-0215897	183.551256	-00.850862	367	112	1978.2	12	10	5	20.04	19.37	19.86	19.39	18.44
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>28.331&%3cFONT%20COLOR=%27#CD5B45%27>12%2014%2012.30144&%3cFONT%20COLOR=%27#CD5B45%27>-00%2051%2003.1032&0891-0215897&183.551256&-00.850862&367&112&1978.2&%20%20%20%2012&%20%20%20%2010&5&20.04&19.37&19.86&19.39&18.44%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6638140f2ad612&-out.add=.&-source=I/284/out&USNO-B1.0===0891-0215896&-out.orig=o' class='full'329.46912 14 12.27816-00 51 05.37120891-0215896183.551159-00.8514924349991993.7 0 02      19.9518.85 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20Naval%20Observatory%20Merged%20Astrometric%20Dataset%20%28NOMAD%29%20contains%0aastrometric%20and%20photometric%20data%20for%20over%201%20billion%20stars%20derived%20from%0athe%20Hipparcos%20%28I/239%29,%20Tycho-2%20%28I/259%29,%20UCAC2%20%28I/289%29,%20and%20USNO-B1.0%0a%28I/284%29%20catalogs%20for%20astrometry%20and%20optical%20photometry,%20supplemented%0aby%202MASS%20%28II/246%29%20near-infrared%20photometry.%3cBR%3e%0a%3cFONT%20SIZE=%27-1%27%3eAn%20efficient%20remote%20query%20program%20%3cB%3efindnomad1%20is%0aavailable%20in%20the%20cdsclient%20%0apackage,%20for%20Unix/Linux%20platforms%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 deg	DEJ2000 deg	r	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Bmag mag	r_	Vmag mag	r_	Rmag mag	r_	Jmag mag	Hmag mag	Kmag mag	R
1	26.270	12 14 10.161336	-00 50 21.68988	0891-0220612	YM	183.5423389	-00.8393583	B	-6.0	3.0	10.0	3.0	17.430	Y	16.210	Y	16.060	B	14.625	13.990	13.805
2	28.327	12 14 12.301344	-00 51 03.09996	0891-0220643	..	183.5512556	-00.8508611	B	12.0	12.0	10.0	3.0	19.860	B			19.390	B
3	29.467	12 14 12.277992	-00 51 05.37012	0891-0220642	..	183.5511583	-00.8514917	B	0.0	0.0	0.0	0.0					19.950	B

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC14 [****ClosingBrace(s)Inserted****]
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CMC14

%20

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RAICRS
deg

DEICRS
deg

r'mag
mag

Nt

Jmag
mag

Hmag
mag

Ksmag
mag

126.26012 14 10.14528-00 50 21.7932121410.1-005021  183.542272-00.83938716.262 414.62513.99013.806 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	16.160	12 14 11.62728	-00 50 36.2040	S6BV007887	183.548447	-00.843390	2000.419				17.91	0	1.54	0.18
2	21.723	12 14 12.22968	-00 50 45.1356	S6BV008114	183.550957	-00.845871	1989.123	20.38				3	1.51	0.42
3	26.107	12 14 10.15680	-00 50 21.8904	S6BV003303	183.542320	-00.839414	1989.123	15.90	17.47		15.47	0	3.41	0.14
4	28.027	12 14 12.27960	-00 51 03.0348	S6BV003256	183.551165	-00.850843	1989.123	19.01	19.82		18.74	3	2.29	0.18
5	29.722	12 14 11.59848	-00 50 19.1580	S6BV006747	183.548327	-00.838655	1996.348		21.84			3	1.73	0.29

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	b1mag mag	b2mag mag	r1mag [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>r1mag

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%22>%5cFONT SIZE=-1magr2mag
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mag

No

fl

126.23412 14 10.15128-00 50 21.7860183.542297-00.839385 -15.3 1.114.62513.80617.6817.8215.7216.0615.64 6 0 228.22412 14 12.29184-00 51 03.1176183.551216-00.850866 7.6 4.3    20.0419.8619.3719.3918.44 5 0 %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag mag	Nmag mag	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag mag	e_ mag	2Mkey	Bmag mag	Rmag mag	Fld	dT yr	fg	fs	M
1	26.248	12 14 10.15057	-00 50 21.7754	XPM 178-0350803	183.542294	-00.839382	-12.78	6.72	-13.34	6.76	15.899	17.468		15.470	14.625	0.038	13.990	0.029	13.806	0.043	1009480985	17.6	15.8	615	45.051380	0	0	M

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	UCAC4	RAJ2000 [****ClosingBrace(s)Inserted****]
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RAJ2000

%20

%22>%5cFONT SIZE=-1degDEJ2000
deg

ePos
mas

f.mag
mag

of

db

pmRA
mas/yr

pmDE
mas/yr

Jmag
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126.19512 14 10.147776-00 50 21.84828446-054646183.5422824-00.8394023 14316.2010 0 -13.3 4.514.62513.806        000000010 %0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 (...)	e_DEJ2000 arcsec	magBJ mag	e_ mag	magRF mag	e_ mag	magG mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	21.537	12 14 12.21811	-00 50 45.4278	183.550909	-00.845952	0.031	0.030	22.893	0.223	20.383	0.300	20.838	0.131	19.350	0.151	1999.2200	1999.2200	0.0	0.0	0.0	0.0
2	26.195	12 14 10.14782	-00 50 21.8479	183.542283	-00.839402	0.084	0.080	17.820	0.400	16.060	0.400	16.229	0.080	15.035	0.110	1979.8700	1983.7400	-13.3	3.3	4.5	3.3
3	26.205	12 14 10.14616	-00 50 21.8471	183.542276	-00.839402	0.400	0.400	17.468	0.300	15.899	0.300	16.139	0.400	14.930	0.500	1989.1200	1989.1200	-14.5	4.0	4.5	2.6
4	28.136	12 14 12.28512	-00 51 03.1067	183.551188	-00.850863	0.040	0.033	19.821	0.300	19.010	0.300	19.239	0.087	18.144	0.115	1999.2200	1999.2200	7.6	5.4	4.3	5.4

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